Warning: This report contains graphic imagery.

U.S. military forces destroyed a second boat suspected of transporting narcotics in international waters, killing three alleged Venezuelan cartel members aboard, President Donald Trump said Sept. 15.

The military strike was the second U.S. attack against what Trump called “violent drug trafficking cartels” from Venezuela, USA TODAY reported. The first strike, on Sept. 2, destroyed a boat originating from Venezuela in the southern Caribbean in international waters, killing 11 alleged members of Tren de Aragua, a criminal gang.

The second strike “occurred while these confirmed narcoterrorists from Venezuela were in International Waters transporting illegal narcotics (A DEADLY WEAPON POISONING AMERICANS!) headed to the U.S.,” Trump posted on Truth Social. No U.S. forces were harmed, the president said.

Republican and Democratic lawmakers questioned the tactics after the earlier strike.

Here’s what we know so far:

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The first boat was bound for Trinidad and Tobago, according to El Pais. It left San Juan de Unare, a coastal town in Sucre state, Venezuela, on Sept. 2. A White House video later showed the boat in flames after being struck by U.S. military forces.

Few details were released on the second strike. Trump called it a “kinetic strike,” which is a weapons attack that exerts force against a target, and said the boat crew were “narcoterrorists” who posed a threat to the U.S.

The U.S. Navy has the Iwo Jima Amphibious Ready Group stationed in the Caribbean Sea as part of the U.S. Southern Command. The ARG is a naval task force consisting of:

USS Iwo Jima, an amphibious assault ship.USS San Antonio, an amphibious transport dock ship.USS Fort Lauderdale, an amphibious transport dock ship.

The ARG includes 4,500 sailors and 2,200 Marines with the 22nd Marine Expeditionary Unit.

Where is Venezuela?

Venezuela is located on the northern tip of South America bordering the Caribbean Sea and the Atlantic Ocean.

This is developing story that will be updated.

CONTRIBUTING Zac Anderson, Davis Winkie, Josh Meyer, USA TODAY

SOURCE USA TODAY Network reporting and research; Reuters; U.S. Naval Institute; U.S. Fleet Forces Command